CN109939620A - A kind of N doping porous cellulose based charcoal aerogel and its preparation method and application - Google Patents
A kind of N doping porous cellulose based charcoal aerogel and its preparation method and application Download PDFInfo
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Abstract
The present invention relates to electrochemical material technical fields more particularly to a kind of N doping porous cellulose based charcoal aerogel and its preparation method and application.N doping porous cellulose based charcoal aerogel provided by the invention, in terms of mass percentage, including 2~5% nitrogen, remaining is carbon；The N doping porous cellulose based charcoal aerogel has irregular cellular porosity, and hole includes macropore, mesoporous and micropore.Embodiment the result shows that, when N doping porous cellulose based charcoal aerogel provided by the invention is prepared into electrode material, specific capacitance height can reach 160~200Fg‑1。
Description
Technical field
The present invention relates to electrochemical material technical field more particularly to a kind of N doping porous cellulose based charcoal aerogel and
Preparation method and application.
Background technique
Cellulose base charcoal-aero gel is a kind of novel porosity Carbon Materials, has a tridimensional network, high porosity, resistance to
The advantages that high temperature, acid and alkali-resistance and easy modification, being applied to the fields such as supercapacitor, battery as electrode material has potentially
Application value.Although simple cellulose base carbon aerogel material has tridimensional network, when as electrode material, wetting
Property is poor, and electron transfer rate is lower, affects its application as electrochemical material.
Summary of the invention
The purpose of the present invention is to provide a kind of N doping porous cellulose based charcoal aerogel and its preparation method and application,
N doping porous cellulose based charcoal aerogel provided by the invention has pore structure and suitable N doping amount, electro-chemical activity
It is higher.
To achieve the goals above, the invention provides the following technical scheme:
The present invention provides a kind of N doping porous cellulose based charcoal aerogels, in terms of mass percentage, including 2~
5% nitrogen, remaining is carbon；The N doping porous cellulose based charcoal aerogel has irregular cellular porosity, the hole
Gap includes macropore, mesoporous and micropore.
Preferably, the specific surface area of the N doping porous cellulose based charcoal aerogel is 800~1400m2/ g, pore volume
For 0.4~0.8cm3/g。
Preferably, the volume accounting of the micropore is 80~90%.
The present invention provides the preparation method of the N doping porous cellulose based charcoal aerogel described in above-mentioned technical proposal, packets
Include following steps:
(1) by microcrystalline cellulose, alkali-urea feed liquid, crosslinking agent and nitrogen source mixed liquor, stood, obtain hydrogel；
(2) hydrogel that the step (1) obtains successively is washed and is freeze-dried, obtain cellulose aerogels；
(3) cellulose aerogels that the step (2) obtains successively are carbonized and is activated, obtain the porous fibre of N doping
Tie up plain based charcoal aerogel.
It preferably, include alkali, carbamide compounds and water, the alkali, ureas chemical combination in alkali-urea feed liquid in the step (1)
The mass ratio of object and water is (5~10): (10~15): (80~100).
Preferably, in the step (1), the mass ratio of alkali-urea feed liquid and microcrystalline cellulose is 100:2~5；
The mass ratio of the nitrogen source and microcrystalline cellulose is (2~4): (2~5).
Preferably, in the step (1),
Crosslinking agent includes one or more of epoxychloropropane, chloroform and epoxy iso-butane；
Nitrogen source includes one or more of polypyrrole, polyaniline and melamine.
Preferably, charing includes low-temperature carbonization and high temperature carbonization in the step (3)；
The temperature of the low-temperature carbonization is 300~500 DEG C, and the time is 100~130min；
The temperature of the high temperature carbonization is 700~900 DEG C, and the time is 60~70min.
Preferably, in the step (3), the atmosphere of activation includes carbon dioxide, and the flow of the carbon dioxide is 0.3~
5L/min；
The temperature of the activation is 700~900 DEG C, and the time of activation is 90~120min.
The present invention also provides described in above-mentioned technical proposal N doping porous cellulose based charcoal aerogel or above-mentioned skill
Application of the N doping porous cellulose based charcoal aerogel that preparation method described in art scheme is prepared as electrochemical material.
N doping porous cellulose based charcoal aerogel provided by the invention, in terms of mass percentage, including 2~5%
Nitrogen, remaining is carbon；The N doping porous cellulose based charcoal aerogel has irregular cellular porosity, and the hole includes
Macropore, mesoporous and micropore.Nitrogen is introduced into carbon skeleton by the present invention, and carbon structure is promoted to reset, and Carbon Materials not only can be improved
The stability of surface functional group, moreover it is possible to be effectively improved the wetability at interface between resulting materials and electrolyte, improve electronics transfer
Efficiency；In addition, N doping porous cellulose based charcoal aerogel provided by the invention also has irregular cellular porosity, and hole
It include macropore, mesoporous and micropore in gap, macropore can provide more attachment site for electronics, mesoporous to provide the way of electron-transport
Diameter, micropore provide electron storage space, and the hole of different pore size cooperates, and improve the charge storage capacity of material.Implement
Example the result shows that, it is close in electric current after N doping porous cellulose based charcoal aerogel provided by the invention is prepared into electrode material
Degree is 1Ag-1When, specific capacitance can reach 160~200Fg-1。
The present invention also provides the preparation method of the N doping porous cellulose based charcoal aerogel, sides provided by the invention
Method makes full use of renewable natural resources using microcrystalline cellulose as raw material, and abundant raw material is cheap, and environmental protection is easy to get, while using nothing
The nitrogen source of poison, not will cause secondary pollution；Preparation process is related to sol-gel method, freeze-drying, charing and activation, technique letter
It is single, it is environmental-friendly, meet green preparation and require, is suitable for large-scale production；In addition, method provided by the invention can also be by changing
The additive amount for becoming nitrogen source achievees the purpose that control nitrogen-doping amount, provide the foundation to obtain target material.
Detailed description of the invention
Fig. 1 is that the SEM of 1 gained N doping porous cellulose based charcoal aerogel of embodiment schemes.
Specific embodiment
The present invention provides a kind of N doping porous cellulose based charcoal aerogels, in terms of mass percentage, including 2~
5% nitrogen, remaining is carbon；The N doping porous cellulose based charcoal aerogel has irregular cellular porosity, the hole
Gap includes macropore, mesoporous and micropore.
In terms of mass content, N doping porous cellulose based charcoal aerogel provided by the invention includes 2~5% nitrogen, excellent
2.2~4.8%, more preferably 2.5~4.5% are selected as, is further preferably 3.3~4.5%；Remaining is carbon.In the present invention, described
N doping porous cellulose based charcoal aerogel there is irregular cellular porosity, the hole includes macropore, mesoporous and micro-
Hole.In the present invention, the pore volume of the N doping porous cellulose based charcoal aerogel is preferably 0.4~0.8cm3/ g, it is more excellent
It is selected as 0.5~0.7cm3/g；The volume accounting of the micropore is preferably 80~90%, and more preferably 80~88%；It is described mesoporous
Volume accounting be preferably 8~12%, more preferably 8~10%.In the present invention, the N doping porous cellulose base charcoal gas
The specific surface area of gel is preferably 800~1400m2/ g, more preferably 900~1350m2/g。
The present invention provides the preparation method of the N doping porous cellulose based charcoal aerogel described in above-mentioned technical proposal, packets
Include following steps:
(1) by microcrystalline cellulose, alkali-urea feed liquid, crosslinking agent and nitrogen source mixed liquor, stood, obtain hydrogel；
(2) hydrogel that the step (1) obtains successively is washed and is freeze-dried, obtain cellulose aerogels；
(3) hydrogel that the step (2) obtains successively is carbonized and is activated, obtain N doping porous cellulose base
Charcoal-aero gel.
The present invention by microcrystalline cellulose, alkali-urea feed liquid, crosslinking agent and nitrogen source mixed liquor, stood, obtain water-setting
Glue.The present invention does not have particular/special requirement, the preferably commercial product of SigmaAldrich company to the source of the microcrystalline cellulose.
In the present invention, the alkali-urea feed liquid preferably includes alkali, carbamide compounds and water；The alkali preferably includes hydrogen-oxygen
Change sodium and/or potassium hydroxide；When the alkali is the mixture of sodium hydroxide and potassium hydroxide, the present invention to the sodium hydroxide and
The mass ratio of potassium hydroxide does not have particular/special requirement.In the present invention, the carbamide compounds preferably include urea and/or thiocarbamide,
When the carbamide compounds are the mixture of two kinds of components, the present invention is not special to the mass ratio of each component in the mixture
It is required that.In the present invention, the water is preferably deionized water.In the present invention, the mass ratio of the alkali, carbamide compounds and water
Preferably (5~10): (10~15): (80~100), more preferably (6~9): (11~14): (80~90) are further preferably 7:
12:81.In the present invention, the mass ratio of the alkali-urea feed liquid and microcrystalline cellulose is preferably 100:2~5, and more preferably 100:
2.5~4.5, it is further preferably 100:3~4.
In the present invention, the crosslinking agent preferably includes one of epoxychloropropane, chloroform and epoxy iso-butane
Or several, more preferably epoxychloropropane.In the present invention, when the crosslinking agent is the mixture of several components, the present invention couple
The mass ratio of each component does not have particular/special requirement in the mixture.The present invention does not have particular/special requirement to the dosage of the crosslinking agent,
Using dosage well known to those skilled in the art.In the specific embodiment of the invention, the crosslinking agent and dermatosome
Amount ratio is preferably (1.0~2.0) mL；1g, more preferably (1.5~1.8) mL:1g.
In the present invention, the nitrogen source preferably includes one or more of polypyrrole, polyaniline and melamine, more excellent
It is selected as polypyrrole.In the present invention, when the nitrogen source is the mixture of several components, the present invention is to each component in the mixture
Mass ratio there is no particular/special requirement.In the present invention, the mass ratio of the nitrogen source and microcrystalline cellulose is preferably (2~4): (2~
5), more preferably (2.3~3.8): (2~5) are further preferably (2.5~3.5): (2~5).
In the present invention, the acquisition modes of the mixed liquor preferably include:
Microcrystalline cellulose is mixed with alkali-urea feed liquid, forms suspension；
The suspension is mixed with crosslinking agent and nitrogen source, obtains mixed liquor.
The present invention preferably mixes microcrystalline cellulose with alkali-urea feed liquid, forms suspension.In the present invention, excellent before mixing
Choosing is first pre-chilled alkali-urea feed liquid, and the temperature of the pre-cooling is preferably 0~-6 DEG C, and more preferably -5~-6 DEG C；Pre-cooling when
Between preferably 1~3h, more preferably 1.5~2h.The present invention preferably passes through the dissolution that pre-cooling promotes subsequent microcrystalline cellulose.Pre-cooling
Afterwards, the present invention preferably thaws the alkali of pre-cooling-urea feed liquid at room temperature, until alkali-urea feed liquid is in no ice-like state, it then will be micro-
Crystalline cellulose is mixed with alkali-urea feed liquid after thawing, and forms suspension.
After obtaining suspension, the present invention preferably mixes the suspension with crosslinking agent and nitrogen source, obtains mixed liquor.This
Invention does not have particular/special requirement, random order to the order by merging of the suspension, crosslinking agent and nitrogen source.To keep each component equal
Even mixing, the present invention preferably mix under agitation, and the mode of the stirring is using well known to those skilled in the art
Mode.
After obtaining mixed liquor, the present invention stands the mixed liquor, obtains hydrogel.In the present invention, institute
The time for stating standing is preferably 4~5h, more preferably 4h；The standing preferably carries out under normal temperature conditions.Of the invention specific
In embodiment, the standing is preferably carried out at 25 DEG C.In the present invention, the cellulose phase during standing, in mixed liquor
Mutually crosslinking forms hydrogel.
After obtaining hydrogel, the hydrogel is successively washed and is freeze-dried by the present invention, obtains cellulose airsetting
Glue.In the present invention, the water scouring water is preferably deionized water.The present invention does not have special want to the concrete mode of the washing
It asks, substrate material can be made to reach neutrality.In the specific embodiment of the invention, the number of the washing is preferably 6~10 times,
More preferably 7~8 times.After washing, the material after washing is freeze-dried by the present invention, obtains cellulose aerogels.At this
In invention, the temperature of the freeze-drying is preferably -50~-60 DEG C, and more preferably -52~-58 DEG C, be further preferably -55 DEG C；It is cold
It is preferably 24~48h that the dry time, which is lyophilized, more preferably 26~46h, is further preferably 30~45h.In the present invention, the freezing
Drying preferably carries out under vacuum conditions, and the pressure of the vacuum is preferably 0~10MPa, more preferably 0~5MPa.In this hair
In bright, the freeze-drying carries out preferably in drying machine.
After obtaining cellulose aerogels, the cellulose aerogels are successively carbonized and are activated by the present invention, obtain nitrogen
Adulterate porous cellulose based charcoal aerogel.In the present invention, the charing preferably carries out under oxygen-free environment, i.e., by protective atmosphere
It is passed through to carbonization reaction system, then is warming up to carbonization temperature, carbonized.In the present invention, the protective atmosphere preferably wraps
Nitrogen and/or inert gas are included, the inert gas preferably includes one or more of helium, neon, argon gas and xenon；Institute
When stating the mixture that protective atmosphere is multiple gases, the present invention is not special to the content of variety classes gas in the mixture
It is required that.In the specific embodiment of the invention, the oxygen-free environment is preferably provided by being passed through nitrogen, and the flow of the nitrogen is preferred
For 2~4L/min, more preferably 2.5~3.5L/min.
In the present invention, the charing preferably includes low-temperature carbonization and high temperature carbonization, and the temperature of the low-temperature carbonization is preferred
It is 300~500 DEG C, more preferably 350~475 DEG C, is further preferably 400~470 DEG C；The time of low-temperature carbonization is preferably 100~
130min, more preferably 110~125min are further preferably 115~120 DEG C；The temperature of the high temperature carbonization is preferably 700~
900 DEG C, more preferably 750~850 DEG C are further preferably 770~830 DEG C；The time of high temperature carbonization is preferably 60~70min, then
Preferably 62~68 DEG C, more preferably 65min.
The present invention is carbonized in advance preferably under cryogenic, to cellulose aerogels, to remove impurity；Then in high temperature
Under the conditions of carbonized, while cooperating the carbonization time of different carbonization stages, obtain the carbon material of required structure.
After charing, the present invention activates the material after the charing.In the present invention, the atmosphere of the activation is preferred
For carbon dioxide, the intake of the carbon dioxide is preferably 0.3~5L/min, more preferably 0.5~4L/min, further preferably for
1~3L/min.In the present invention, the temperature of the activation is preferably 700~900 DEG C, more preferably consistent with the temperature of charing；Institute
The time for stating activation is preferably 90~120min, more preferably 100~120min.After the completion of activation, the present invention is preferably to activation
It is passed through protective atmosphere in system, is then cooled to room temperature, obtains N doping cellulose base charcoal-aero gel.
In the present invention, above-mentioned activation process can generate in gained carbon material generates a large amount of microcellular structure, in turn
Obtain micropore N doping cellulose base charcoal-aero gel abundant.
The present invention also provides described in above-mentioned technical proposal N doping porous cellulose based charcoal aerogel or above-mentioned skill
Application of the N doping porous cellulose based charcoal aerogel that preparation method described in art scheme is prepared as electrochemical material.
In the present invention, the electrochemical material is preferably prepared as follows to obtain:
N doping porous fibre based charcoal aerogel is mixed with acetylene black, PTFE binder, obtains slurry；Then
The slurry is coated in nickel foam, electrode is obtained after dry, is assembled in 2032 models with glassine paper in argon filling glove box
Stainless steel battery size on, electrolyte be 6M KOH.
In the present invention, the mass ratio of the N doping porous fibre based charcoal aerogel, acetylene black and polytetrafluoroethylene (PTFE) is excellent
It is selected as 8:1:1；The coated weight of the slurry is preferably 3~5mg, more preferably 3.5~4.5mg.
The present invention does not have particular/special requirement to the coating method, drying mode, battery assembly mode, using art technology
Mode known to personnel.
It in the present invention, is 1Ag in current density-1Under the conditions of when testing, the specific capacitance of the electrochemical material is up to
160~200Fg-1；It is 145Wkg in power density-1When, energy density is up to 22Whkg-1。
N doping cellulose base charcoal-aero gel of the present invention have excellent chemical property be mainly pore structure and
N doping synergistic effect as a result, i.e. electric double layer electrostatic mechanism and faraday's oxidation-reduction process (fake capacitance) Lai Shixian, and
Electric energy is stored and discharged by the electrostatic interaction between the ion in electrolyte and electrode, further improves electrode material
Expect the stability of chemical property.In the present invention, the electrochemical material is preferred for battery or supercapacitor.
In order to further illustrate the present invention, porous to a kind of N doping provided by the invention with reference to the accompanying drawings and examples
Cellulose base charcoal-aero gel and its preparation method and application is described in detail, but cannot be interpreted as them to protect the present invention
Protect the restriction of range.
Embodiment 1
By 7g sodium hydroxide, 12g urea is dissolved in 81g distilled water, pre-coo time 2h, -6 DEG C of temperature, takes out room temperature
It thaws to no ice-like state, is added 5g microcrystalline cellulose (Sigma Aldrich commercial product), magnetic agitation 2.5h, be added
9mL epoxychloropropane and 4g polypyrrole, magnetic agitation 2.5h take out magneton, are placed at room temperature for 4h to forming gel, clear with distilled water
10 times are washed to neutrality, hydrogel is put into cooling driers and is freeze-dried, freeze-drying temperature is -55 DEG C, and cooling time is
48h, the sample after freeze-drying are put into tube furnace, N2It is warming up to 500 DEG C under gas shield, keeps 120min, is warming up to 800
DEG C, N is closed after keeping 60min2, it is passed through CO2, 120min is kept, CO is closed2, it is passed through N2, naturally ring to room temperature and obtain N doping
Porous cellulose based charcoal aerogel.
Embodiment 2~4
N doping porous cellulose based charcoal aerogel is prepared according to the step of embodiment 1, raw material dosage and technological parameter
Adjustment is listed in Table 1 below, and wherein the nitrogen source of embodiment 3 is melamine, and carbamide compounds are thiocarbamide；The nitrogen source of embodiment 4 is poly-
Aniline, other are the same as embodiment 1.
1 Examples 1 to 4 of table prepares raw material and technological parameter
It is characterized using pattern of the scanning electron microscope to N doping porous cellulose based charcoal aerogel obtained by Examples 1 to 4,
Wherein the characterization result of 1 resulting materials of embodiment is as shown in Figure 1.As shown in Figure 1, N doping porous cellulose provided by the invention
Based charcoal aerogel has pore structure abundant, and hole is in irregular honeycomb structure.
Using Volumetric Adsorption Analyzer (ASAP2020, Micromeritics, Shanghai,
China)) specific surface area, the pore volume of 1~4 gained N doping porous cellulose based charcoal aerogel of testing example, test result
It is shown in Table 2.
It is tested using X-ray photoelectron spectroscopy (PHI5700, Chanhassen, MN, USA) real
The atom doped amount of N of 1~4 gained N doping porous cellulose based charcoal aerogel of example is applied, test result is shown in Table 2.
N doping porous fibre based charcoal aerogel structure feature obtained by 2 Examples 1 to 4 of table
| Structural parameters | Embodiment 1 | Embodiment 2 | Embodiment 3 | Embodiment 4 |
| Kong Rong (m3/g) | 0.6 | 0.58 | 0.65 | 0.62 |
| Specific surface area (m2/g) | 1300 | 1100 | 1150 | 1180 |
| Micropore accounting (%) | 80 | 82 | 83 | 80 |
| N doping amount (%) | 3 | 2.8 | 2.8 | 3 |
Remarks: micropore accounting refers to that micropore volume accounts for the percentage of Kong Rong.
By 2 test result of table it is found that the pore structure of N doping porous cellulose based charcoal aerogel provided by the invention is rich
Richness, while there is micropore, mesoporous and macropore, wherein macropore can provide more attachment site for electronics, mesoporous to can provide electricity
Sub- delivering path, micropore provide electron storage space, and macropore, mesoporous and micropore structure feature store up the charge for improving material
It is advantageous to deposit capacity.
It is prepared as follows N doping porous fibre based charcoal aerogel obtained by Examples 1 to 4 to obtain electrode material:
N doping porous fibre based charcoal aerogel is mixed with acetylene black and polytetrafluoroethylene (PTFE) according to the mass ratio of 8:1:1,
Obtain slurry；Then the slurry of 3mg is coated on abscess nickel, obtains electrode after dry.In argon filling glove box with glassine paper
It is assembled on the stainless steel battery of 2032 models, electrolyte is 6M KOH, in 1Ag-1Current density under under the conditions of test it is real
Apply the specific capacitance of 1~4 gained N doping porous fibre based charcoal aerogel counter electrode material of example；
It is 145Wkg in power density-1When, 1~4 gained N doping porous fibre based charcoal aerogel pair of testing example
Answer the energy density of electrode material.Test result is shown in Table 3.
The electric property of N doping porous fibre based charcoal aerogel counter electrode material obtained by 3 Examples 1 to 4 of table
| Structural parameters | Embodiment 1 | Embodiment 2 | Embodiment 3 | Embodiment 4 |
| Specific capacitance (Fg-1) | 195 | 180 | 190 | 185 |
| Energy density (Whkg-1) | 21.9 | 20 | 20 | 19.8 |
By the test result of table 3 it is found that N doping porous fibre based charcoal aerogel counter electrode material provided by the invention
Specific capacitance and energy density it is higher, illustrate that the electric property of electrode material is good.
As seen from the above embodiment, the present invention makes full use of renewable natural resources, simultaneously using microcrystalline cellulose as raw material
It is environmental-friendly using nontoxic polypyrrole as nitrogen source, meet green preparation and requires；Using a step sol-gal process, can pass through
The doping that control changes the additive amount control nitrogen of polypyrrole is 2~5%；Using CO2Activation method, can be by controlling CO2
Activation condition regulation carried out to pore structure make the specific surface area of gained charcoal-aero gel up to 800~1400m2/ g, pore volume reach
0.4~0.8cm3/g；In addition, the specific capacitance of the N doping porous cellulose based charcoal aerogel of preparation is up to 150~200Fg-1,
It is applied to the fields such as supercapacitor, battery as electrode material to have potential application.
Although above-described embodiment is made that detailed description to the present invention, it is only a part of the embodiment of the present invention,
Rather than whole embodiments, people can also obtain other embodiments under the premise of without creativeness according to the present embodiment, these
Embodiment belongs to the scope of the present invention.
Claims (10)
1. a kind of N doping porous cellulose based charcoal aerogel, in terms of mass percentage, including 2~5% nitrogen, remaining is
Carbon；The N doping porous cellulose based charcoal aerogel has irregular cellular porosity, and the hole includes macropore, mesoporous
And micropore.
2. N doping porous cellulose based charcoal aerogel as described in claim 1, which is characterized in that the porous fibre of N doping
The specific surface area for tieing up plain based charcoal aerogel is 800~1400m2/ g, pore volume are 0.4~0.8cm3/g。
3. N doping porous cellulose based charcoal aerogel as claimed in claim 1 or 2, which is characterized in that the appearance of the micropore
Product accounting is 80~90%.
4. the preparation method of the described in any item N doping porous cellulose based charcoal aerogels of claims 1 to 3, including following step
It is rapid:
(1) by microcrystalline cellulose, alkali-urea feed liquid, crosslinking agent and nitrogen source mixed liquor, stood, obtain hydrogel；
(2) hydrogel that the step (1) obtains successively is washed and is freeze-dried, obtain cellulose aerogels；
(3) cellulose aerogels that the step (2) obtains successively are carbonized and is activated, obtain N doping porous cellulose
Based charcoal aerogel.
5. preparation method as claimed in claim 4, which is characterized in that include alkali, urea in alkali-urea feed liquid in the step (1)
Class compound and water, the mass ratio of the alkali, carbamide compounds and water are (5~10): (10~15): (80~100).
6. preparation method as described in claim 4 or 5, which is characterized in that in the step (1), alkali-urea feed liquid and crystallite are fine
The mass ratio of dimension element is 100:2~5；
The mass ratio of the nitrogen source and microcrystalline cellulose is (2~4): (2~5).
7. preparation method as claimed in claim 4, which is characterized in that in the step (1),
Crosslinking agent includes one or more of epoxychloropropane, chloroform and epoxy iso-butane；
Nitrogen source includes one or more of polypyrrole, polyaniline and melamine.
8. preparation method as claimed in claim 4, which is characterized in that charing includes low-temperature carbonization and height in the step (3)
Temperature charing；
The temperature of the low-temperature carbonization is 300~500 DEG C, and the time is 100~130min；
The temperature of the high temperature carbonization is 700~900 DEG C, and the time is 60~70min.
9. the preparation method as described in claim 4 or 8, which is characterized in that in the step (3), the atmosphere of activation includes two
Carbonoxide, the flow of the carbon dioxide are 0.3~5L/min；
The temperature of the activation is 700~900 DEG C, and the time of activation is 90~120min.
10. the described in any item N doping porous cellulose based charcoal aerogels of claims 1 to 3 or claim 4~9 are any
Application of the N doping porous cellulose based charcoal aerogel that preparation method described in is prepared as electrochemical material.
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| CN110294477A (en) * | 2019-07-25 | 2019-10-01 | 福建农林大学金山学院 | A kind of nitrogen sulphur codope active carbon and preparation method thereof |
| CN111253597A (en) * | 2020-01-08 | 2020-06-09 | 武汉理工大学 | Chitin nanofiber/polyaniline composite gel film and preparation method thereof |
| CN111439740A (en) * | 2020-04-07 | 2020-07-24 | 国际竹藤中心 | Nitrogen-doped bamboo cellulose carbon aerogel electrode material and preparation method thereof |
| CN113462400A (en) * | 2021-06-21 | 2021-10-01 | 山东省地质矿产勘查开发局第五地质大队（山东省第五地质矿产勘查院） | Cellulose-based doped carbon aerogel for in-situ passivation and restoration of heavy metal contaminated soil and preparation method thereof |
| CN113636537A (en) * | 2021-08-10 | 2021-11-12 | 北京化工大学 | Preparation method of high-performance cellulose-based carbon aerogel for supercapacitor electrode material |
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